Title :
Performance of the DIII-D 110 GHz ECH system during the first year of operations and testing
Author :
Wright, A.L. ; Allen, J.C. ; Cary, W.P. ; Harris, T.E.
Author_Institution :
Gen. Atomics, San Diego, CA, USA
Abstract :
The first of four Varian 500 kW 110 GHz gyrotrons (VGT-8011) to be used in the new 2 MW 110 GHz electron cyclotron heating system being developed for the DIII-D tokamak was put into test at General Atomics within the last year. This gyrotron has been used to demonstrate the overall system efficiency and to validate the design of individual transmission line components. The first plasma heating observed with a 110 GHz was consistent with the power expected for the greater than 85% transmission efficiency of HE1.1 power. A comparison of the General Atomics´ TE15,2 to HE1.1 mode converter with the Vlasov-type mode converter designed by the University of Wisconsin showed similar conversion efficiencies. The overall ECH system performance during the first year of testing will also be discussed
Keywords :
fusion reactor design; fusion reactor ignition; fusion reactor operation; fusion reactors; gyrotrons; plasma radiofrequency heating; plasma toroidal confinement; power convertors; power transmission lines; 110 GHz; 2 MW; DIII-D ECH system; DIII-D tokamak; ECH system operation; ECH system testing; TE15,2-HE1.1 mode converter; VGT-8011; Varian gyrotrons; Vlasov-type mode converter; conversion efficiencies; electron cyclotron heating system; fusion reactor; system efficiency; transmission efficiency; transmission line components; Cyclotrons; Electrons; Gyrotrons; Heating; Helium; Plasmas; Power transmission lines; System testing; Tellurium; Tokamaks;
Conference_Titel :
Fusion Engineering, 1993., 15th IEEE/NPSS Symposium on
Conference_Location :
Hyannis, MA
Print_ISBN :
0-7803-1412-3
DOI :
10.1109/FUSION.1993.518513
